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1.
Nutritionally enhanced spaghetti was prepared from durum semolina fortified with 0–30% desi chickpea ‘besan’ flour. This study examined the dough rheology, processing ease and quality attributes of the fortified spaghetti including protein, starch, texture (firmness, resilience and stickiness), colour, cooking loss, and organoleptic acceptability. Chickpea-fortified spaghetti was acceptable to consumers, had reasonable pasta quality, including lower cooking loss and less stickiness than the control spaghetti and retained firmness better than durum after refrigeration. This study suggests that chickpea-fortified spaghetti may be suited to uses such as fresh pasta, in soups, canning, and microwave re-heating. In addition, this study has added to the understanding of the underlying mechanisms of pasta quality. The main findings were: (1) gluten content/composition appears to be more important than protein content for pasta firmness; (2) the protein–polysaccharide matrix appears to be more important than the starch composition for cooking loss; (3) increased protein and amylose contents were associated with decreased pasta stickiness; (4) cooking loss and stickiness were not necessarily as strongly related as commonly believed. Further research into these theories is necessary to fully understand the underlying mechanisms of pasta quality. 相似文献
2.
《Journal of Cereal Science》2013,57(3):667-675
The rapid stiffening of a well-developed gluten network able to entrap swollen starch granules is a key factor for the high quality of durum wheat pasta during cooking. Good resistance and firmness, low stickiness and limited release of organic materials into the cooking water are quality traits of primary importance for traditional pasta. In gluten-free (GF) pasta, the formation of a scaffold of retrograded starch can be an alternative to gluten networking: it confers rigidity to the cooked product and reduces pasta stickiness and loss of soluble materials into the cooking water. In a previous paper, 14 commercial GF spaghetti samples were studied as uncooked products from a chemical, biochemical and physical point of view. The aim of this study was to determine the cooking behaviour of these samples. A durum wheat pasta was also included as reference. Suitable cooking conditions were adopted and different conventional and innovative evaluations (i.e. compression test, creep test) were performed as a function of cooking time. Different behaviours were evidenced, often related to the ultrastructural organization of the uncooked products. In particular, the creep test revealed to be very effective in discriminating among the properties of the different GF spaghetti. 相似文献
3.
The rapid stiffening of a well-developed gluten network able to entrap swollen starch granules is a key factor for the high quality of durum wheat pasta during cooking. Good resistance and firmness, low stickiness and limited release of organic materials into the cooking water are quality traits of primary importance for traditional pasta. In gluten-free (GF) pasta, the formation of a scaffold of retrograded starch can be an alternative to gluten networking: it confers rigidity to the cooked product and reduces pasta stickiness and loss of soluble materials into the cooking water. In a previous paper, 14 commercial GF spaghetti samples were studied as uncooked products from a chemical, biochemical and physical point of view. The aim of this study was to determine the cooking behaviour of these samples. A durum wheat pasta was also included as reference. Suitable cooking conditions were adopted and different conventional and innovative evaluations (i.e. compression test, creep test) were performed as a function of cooking time. Different behaviours were evidenced, often related to the ultrastructural organization of the uncooked products. In particular, the creep test revealed to be very effective in discriminating among the properties of the different GF spaghetti. 相似文献
4.
The manufacture and characterization of gluten-free spaghetti based on maize flour and different vegetable flours (artichoke, asparagus, pumpkin, zucchini, tomato, yellow pepper, red pepper, green pepper, carrot, broccoli, spinach, eggplant and fennel) were addressed in this study. The screening of the vegetable flours showed that homogeneity, color, fibrous, taste and odor were the parameters that have most influenced the overall quality of the dry spaghetti. The spaghetti added with yellow pepper flour was chosen for further analysis because of its highest sensory quality; in contrast, it recorded low carotenoids content due to the high temperature of the drying process (cycle named as HTDC). Therefore, an optimization of the drying cycle was performed (lower temperature) on the yellow pepper flour (cycle named as LTDC) that resulted in an increase of the carotenoids content. Although the spaghetti with low temperature yellow pepper flour had a higher cooking loss and lower instrumental hardness when compared to the spaghetti made with only maize flour (CTRL) it however had a significantly higher protein and dietary fiber content. Moreover there was no significant difference in the amount of glucose released during in vitro digestion for this spaghetti sample with respect to the CTRL sample. 相似文献
5.
Tülin Ozderen Burcu Olanca Turgay Sanal Dilek Sivri Ozay Hamit Koksel 《Journal of Cereal Science》2008
Effects of suni-bug (Eurygaster spp.) damage on semolina properties and spaghetti quality characteristics of durum wheats (Triticum durum L.) were investigated. The semolinas obtained from sound (control), medium damage (around 20%) and high damage (around 40%) samples of five durum wheat cultivars (cvs. Diyarbakir, Firat, Ege, Svevo and Zenith) were processed into spaghetti. As the bug damage level increased, Glutograph stretch values of all cultivars decreased significantly probably due to deteriorative effects of bug damage on gluten quality. Glutograph relaxation values and gluten spread values of the damaged samples were considerably higher compared to those of sound samples in all cultivars, due to proteolytic degradation. The breaking force of the uncooked spaghetti samples decreased significantly with increasing bug damage level indicating that they were susceptible to breakage and not suitable for handling, packaging and shipment. Panel tests indicated significant deterioration in sensory properties (stickiness, firmness and bulkiness) generally at the medium damage level. 相似文献
6.
Granule-bound starch synthase, also known as the waxy protein catalyses the synthesis of amylose in wheat endosperm starch. In durum wheats, the genes encoding GBSS are present at the two Wx loci on chromosome 7A and 4A (a segment of 7B that has been translocated). Several null Wx-B1 (missing GBSS protein from chromosome 4A) durum lines were produced from crosses with null-4A bread wheats backcrossed to durum wheats. Semolina milled from 4 normal and 7 null-4A durum wheat lines grown over two seasons (1999 and 2000) in South Australia were analysed for amylose content, starch pasting properties as measured by the Rapid Viscoanalyzer (RVA), swelling power and starch damage, protein content and electrophoretic protein analysis. Spaghetti was prepared with a micro-scale extruder and the cooked pasta evaluated for cooking loss, firmness, stickiness and water absorption. The null-4A lines had significantly lower (ca. 5%) amylose content, higher starch peak viscosities and semolina swelling power. The pasta derived from the null-4A lines had lower cooking loss and in 1999 was more adhesive than the non-waxy lines. Cooking loss was correlated with amylose content, peak starch viscosity, swelling power of semolina and cooked pasta adhesiveness. Semolina swelling power was highly correlated with RVA peak viscosity. Waxy durum wheats appear to have an advantage over the normal types in terms of lower cooking loss, widely used as an indicator of pasta cooking quality. 相似文献
7.
Samples of Canadian amber durum wheat varieties, of various protein content and a composite of export cargo samples, were milled to yield straight-grade and patent flours by reducing semolina and processed into yellow alkaline noodles (YAN). Samples of Canada Hard White Spring (CWHWS) and Canada Western Red Spring (CWRS) were included for comparative purposes. YAN from durum wheat displayed a colour advantage over CWRS and CWHWS YAN. The durum YAN displayed an approximate 9–20 unit greater b* (yellowness) value than CWRS and CWHWS at 2 and 24 h after preparation. This relates to greater yellow pigment and flavonoid contents in the durum flours. All durum wheat YAN exhibited excellent noodle brightness, which was retained over time due to lower levels of the enzymes polyphenol oxidase (PPO) and peroxidase (POD). Durum noodles displayed significantly fewer specks than CWRS and were comparable to CWHWS. Durum wheat YAN cooking quality was equal to or slightly superior to CWRS and CWHWS. Durum wheat flour refinement imparted no significant effects on cooked noodle texture (maximum cutting stress, recovery, resistance to compression). However, the various texture parameters improved with durum wheat protein content and gluten strength. 相似文献
8.
《Journal of Cereal Science》2009,49(3):848-856
Samples of Canadian amber durum wheat varieties, of various protein content and a composite of export cargo samples, were milled to yield straight-grade and patent flours by reducing semolina and processed into yellow alkaline noodles (YAN). Samples of Canada Hard White Spring (CWHWS) and Canada Western Red Spring (CWRS) were included for comparative purposes. YAN from durum wheat displayed a colour advantage over CWRS and CWHWS YAN. The durum YAN displayed an approximate 9–20 unit greater b* (yellowness) value than CWRS and CWHWS at 2 and 24 h after preparation. This relates to greater yellow pigment and flavonoid contents in the durum flours. All durum wheat YAN exhibited excellent noodle brightness, which was retained over time due to lower levels of the enzymes polyphenol oxidase (PPO) and peroxidase (POD). Durum noodles displayed significantly fewer specks than CWRS and were comparable to CWHWS. Durum wheat YAN cooking quality was equal to or slightly superior to CWRS and CWHWS. Durum wheat flour refinement imparted no significant effects on cooked noodle texture (maximum cutting stress, recovery, resistance to compression). However, the various texture parameters improved with durum wheat protein content and gluten strength. 相似文献
9.
The effect of primary processing, namely milling, on the phenolic content and antioxidant capacity of two wheat cultivars, namely Canada Western Amber Durum (Triticum turgidum L. var. durum) and Canada Western Red Spring (Triticum aestivum L.) was studied. The milling products: bran, flour, shorts and feed flour fractions were examined. In addition, semolina was an end-product of durum wheat milling. Antioxidant activity of wheat phenoliocs was evaluated using oxygen radical absorbance capacity, inhibition of photochemiluminescence, the Rancimat method, and inhibition of oxidation of low-density lipoprotein cholesterol and deoxyribonucleic acid. The phenolic composition of wheat extracts was determined using high performance liquid chromatography. Bran showed the highest antioxidant activity whereas the endosperm possessed the lowest in both cultivars examined. The phenolic compounds are concentrated in the outermost layers namely the bran. The consumption of wheat with bran in the form of whole grain may provide beneficial health effects. 相似文献
10.
Effect of particle size and blend composition (wheat semolina: pearl millet flour) on quality of pasta were investigated in this study. Initially, the pasta was prepared from 100% pearl millet flour of different particle sizes (241–780 μm). Observation indicated that it was not possible to make pasta from 100% pearl millet flour as these disintegrated after cooking. Particle sizes of pearl millet flour showed significant effect on nutritional and cooking quality of pearl millet pasta. Pasta from pearl millet flour of particle size 425 μm had least cooking loss, high protein, iron and zinc contents. Further, with increase in the level of pearl millet flour in the blend composition, protein, ash and cooking loss of pasta increased whereas hardness, cohesiveness, springiness, gumminess and chewiness showed decreasing trend. Blend composition (wheat semolina: pearl millet flour) in the ratio of 70:30 was found to be satisfactory for making pasta with desirable quality characteristics like cooking loss (<8%), protein content (>10%), ash content (<0.7%), colour and texture. However, with the objective of maximum incorporation of pearl millet flour in the final product, a blend composition of 50:50 could be used to make pasta with acceptable quality. 相似文献
11.
Couscous is a traditional cereal product produced by rubbing durum semolina particles with water by hand, but can be produced by using pasta pressing technique. This study aimed to produce a short-cut pasta type couscous by substitution of semolina with undersize bulgur at 25, 50, 75 and 100%, by determining optimum parameters. Bulk density, cooking loss, volume and weight increases, protein and ash contents, color, sensory, texture and functional properties were determined. Couscous samples were prepared and dried using packed bed (60 and 80 °C) and microwave dryers (180 and 360 W) to determine optimum parameters. It was found that the quantity of bulgur flour was significantly (p ≤ 0.05) effective on the sensory attributes, bulk density, cooking loss, volume and weight increases, protein and ash contents in contrast to functional properties. Weight and volume increase values decreased with increasing quantity of bulgur flour. Couscous samples containing bulgur flour have higher protein than the control due to higher protein content of bulgur. According to texture profile, hardness of couscous containing bulgur flour was lower than the semolina control for each drying technique. Results revealed the fact that the production of pasta type couscous is possible using totally undersize bulgur instead of semolina. 相似文献
12.
Schoenlechner R Drausinger J Ottenschlaeger V Jurackova K Berghofer E 《Plant foods for human nutrition (Dordrecht, Netherlands)》2010,65(4):339-349
The use of amaranth, quinoa and buckwheat for the production of gluten-free pasta was investigated in the present study. The
aim of the work was to produce pasta of good textural quality, in particular, low cooking loss, optimal cooking weight and
texture firmness. The results demonstrated that pasta produced from amaranth had decreased texture firmness and cooking time,
while pasta from quinoa mainly showed increased cooking loss. In buckwheat pasta the least negative effects were observed.
By combination of all three raw materials to one flour blend in the ratio of 60% buckwheat, 20% amaranth and 20% quinoa, dough
matrix was improved. After decreasing dough moisture to 30%, addition of an increased amount of egg white powder of 6% and
addition of 1.2% emulsifier (distilled monoglycerides) texture firmness as well as cooking quality of gluten-free pasta produced
from such a flour blend reached acceptable values comparable to wheat pasta. 相似文献
13.
A health claim linking the consumption of barley β-glucan and the lowering of blood cholesterol has been allowed in North America and Europe which resulted in increased interest in barley products. Waxy barley flour rich in β-glucan (10% d.b.) was used to produce barley functional spaghetti and compared to semolina spaghetti. The impact of processing (extrusion, drying and cooking) on the physicochemical properties of barley blends and pasta as the molecular characterization of β-glucan were investigated. Pasta processing did not significantly affect the amount of β-glucan, but it impacted the β-glucan physicochemical properties in the end products. In all pasta, extrusion and drying were detrimental to the β-glucan properties, while cooking significantly increased the extractability and molecular weight of β-glucan, and in turn its viscosity, which determines its physiological effectiveness. In general, replacing wheat semolina with barley flour rich in β-glucan resulted in improved barley pasta containing the recommended amount of β-glucan per serving and enhanced β-glucan properties. 相似文献
14.
Laura Gazza Daniela SgrullettaAlessandro Cammerata Gloria GazzelloniMaurizio Perenzin Norberto E. Pogna 《Journal of Cereal Science》2011,54(3):481-487
The effects of grain texture on pastamaking and breadmaking quality were studied in three F8 soft-textured durum wheat lines (SDLs) containing wild-type alleles Pina-D1a and Pinb-D1a as compared with their hard durum sister lines (HDLs). SDLs homozygous for a small 5DS segment, less than 14.4 cM in size, accumulated puroindolines A (Pin-A) and B (Pin-B) and showed SKCS values (19.9-23.6) significantly lower than those (72.6-76.8) of their hard-textured counterparts lacking Pin-A and Pin-B. In addition, SDLs exhibited approximately 24% higher flour extraction rates compared with HDLs. Reducing the kernel hardness decreased farinograph water absorption, dough tenacity (P) and, accordingly, alveograph P/L ratio, but increased farinograph stability, mixing tolerance and dough extensibility (L). Spaghetti cooking quality, as determined by the sensory judgment of firmness, stickiness and bulkiness, was unaffected by the kernel hardness, whereas the loaf volume exhibited a 10% increase associated with kernel softening. Flour and semolina, but not spaghetti, from SDLs showed a substantial reduction in yellowness (b*) and brownness (100 − L*) likely due to their finer particle size compared with HDLs. Alleles Pina-D1a and Pinb-D1a may offer new perspectives for breeding dual purpose (pasta and bread) durum wheat varieties. 相似文献
15.
《Journal of Cereal Science》2006,44(2):194-202
The effects of incorporation of an i-type low-molecular-weight glutenin subunit (LMW-i) and of a modified γ-gliadin showing an additional cysteine residue, on 2 g Mixograph parameters of durum (biotypes 42 and 45 of the Italian cv. Lira) and bread wheat (Australian cv. Kukri) doughs were studied. In bread wheat flour incorporation of the modified γ-gliadin resulted in a significant decrease in dough strength (decreased mixing time and peak resistance), but at the same time it produced a slight increase in dough stability (decreased resistance to breakdown). The incorporation of the LMW-i type into bread wheat dough had minimal effects on dough mixing requirements. The incorporation of both LMW-i type and modified γ-gliadin in durum wheat doughs produced a significant decrease in the overall dough strength, especially in Lira 45 biotype doughs. Reversed phase high-performance liquid chromatography (RP-HPLC), size exclusion high-performance liquid chromatography (SE-HPLC) and two-dimensional gels analyses of control and reconstituted semolina doughs showed that the two polypeptides were in the polymeric fraction. The effect of the incorporation of the two polypeptides in durum and bread wheat doughs showed remarkable differences and the reasons for this is discussed in terms of both intrinsic differences between wheat flour and durum semolina and in methodological approaches. 相似文献
16.
Fabio Licciardello Valeria Rizzo Oscar Grillo Gianfranco Venora Giuseppe Muratore 《Journal of Cereal Science》2013
The present study addresses the influence of ageing on the bread-making performances of durum wheat semolina by bread image analysis. Bread loaves were produced from semolina samples stored in 4 different packaging materials for up to 150 days. Sampling and bread-making trials were performed every 15 days. Results showed that ageing does affect durum wheat semolina bread-making performances, highlighting that storage time, rather than the type of packaging material, is the main factor determining quality changes in the final bread samples. In particular, a change in the crust colour parameters and a reduction of the bread slice area and height by 20–35% were observed with increasing semolina storage time, along with a slight increase of crust % area. The change in farinographic parameters of dough suggests that the observed reduction of technological quality might be due to increased stiffness and reduced extensibility of gluten occurring in aged semolina. Unlike common wheat flours, which usually improve their technological features during ageing, durum wheat semolina is negatively affected in its quality by storage. The study highlights the importance of considering bread-making performances among the quality parameters to be taken into account for the shelf life evaluation of durum wheat semolina. 相似文献
17.
Grain physical characteristics and milling behavior of a durum wheat line in which both wild-type puroindoline genes were translocated and stabilized after backcrossing (Svevo-Pin) were compared with the parent line (Svevo). The only observed differences between grain characteristics were the mechanical resistance and starchy endosperm porosity revealed through vitreosity measurement. A significant increase of flour and a decrease of semolina yield and break milling energy were observed from Svevo-Pin in comparison with the non-recombinant parent line in accordance to the lower grain mechanical resistance and higher porosity measurements. Moreover, the particle size distribution shown for Svevo-Pin flour appeared consistent with a lower adhesion between starch granules and the protein matrix attributed to the presence of wild-type puroindolines. Coarse bran yield was conversely increased. This appeared to be due to a lower starchy endosperm recovery as a higher proportion of grain starch was found in this bran fraction. Flour from the durum parent line was inversely enriched in phytic acid, a cellular marker of the aleurone layer. Starch damage was also lower in Svevo-Pin flours in comparison with Svevo. All of the observed differences between translocation and parent lines were confirmed independent of the culture growth conditions (n = 12). 相似文献
18.
White, blue, black and purple red wheat bran powders were prepared by ultrafine grinding to the particle size distribution of 0.5–100 μm. The effects of wheat bran addition on the qualities of dry Chinese noodles were investigated. Rapid Visco Analyzer results suggested that peak viscosity, hot paste viscosity, cool paste viscosity, breakdown viscosity and setback viscosity of the blends decreased with the increasing bran levels from 2.0% to 6.0% (P < 0.05). Color of dough sheet (L*) decreased with the addition of wheat bran, while a* and b* values increased distinctly. Water absorption and firmness of the cooked noodles showed up trends with increasing addition of bran, while cooking loss showed a downtrend. Tensile strength and elongation rate decreased when bran addition was 2.0%, but increased when bran addition reached 4.0%–6.0%. Storage modulus (E′) and loss modulus (E″) showed decreasing trends with increases in bran addition at frequencies of 0.1–10 Hz. SEM revealed that bran presence could slightly decrease surface connectivity between starch granules and gluten. It is possible to produce fiber-rich noodles by using 2.0%–6.0% ultrafine-ground bran in wheat flour. 相似文献
19.
The effects of the replacement of einkorn flour on pasta proteins aggregation were studied by sodium dodecyl sulfate polyacrylamide gel electrophoresis and size exclusion high performance chromatography. Pasta was produced replacing durum wheat semolina with an increasing amount of einkorn flour (30, 50 and 100%). The polymeric protein structure of flours and related pasta and pasta mixture was determined by protein subunits composition and size of polymeric proteins. The unextractability of polymeric protein was related to the unextractable protein fraction and to the determination of –SH/-SS groups. Durum wheat semolina and einkorn flours increased their unextractable and polymeric fractions during pasta processing. The unexpected results derived from the areas of unextractable fractions and total and large unextractable polymeric fractions of 70/30 semolina/einkorn pasta mixture that were lower than those of 50/50 semolina/einkorn pasta mixture. Although the semolina flour contained more gluten proteins than einkorn flour, a higher aggregation was registered for 50/50 semolina/einkorn flour pasta. These results suggested that a different assessment of gluten network occurred in pasta mixture and it was regulated by a self-assembling machine influenced by nature of HMW-GS. The 50/50 semolina/einkorn pasta mixture determined a supramolecular structure in the developing of its network architecture. 相似文献
20.
为了解硬粒小麦品种不同磨粉样品和不同类型间的淀粉品质特性,测定了2个硬粒小麦品种4种不同磨粉样品的膨胀势和5个不同类型品种的膨胀势和直链淀粉含量。结果表明,2个硬粒小麦品种不同磨粉样品的膨胀势均以淀粉最高;缺失4A型和7A型的硬粒小麦品种具有膨胀势高、直链淀粉含量低的特性。文中还对我国硬粒小麦品质改良作了讨论。 相似文献